ZIP code · Crystal City · Texas · United States

ZIP code 78839 — Crystal City

ZIP code 78839 serves Crystal City, Texas.

Postal code
78839
Single source Value from one source, not cross-checked.
City
Crystal City
County
Zavala FIPS 48507
State
Texas
Country
United States
Coordinates
28.6870, -99.8264 — precision precise (locality)
View on OpenStreetMap
Population
7,333 (ZCTA, ACS 5-year)
Population density
30 / sq mi
Land area
244.2 sq mi (632.4 km²) (ZCTA, ACS 5-year)
Median household income
$43,769
Per-capita income
$21,488
Median age
33.5
Households
2,668
Housing units
3,053
Median home value
$91,900
Median gross rent
$448 / month
Congressional district
TX-23 (119th Congress)
USDA hardiness zone
9a (20 to 25 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
830
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Aug (avg high 99°F), coldest Jan (avg low 44°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F677279869196979993857468
Avg low °F444955627075767672645345
Precip in1.00.81.71.32.22.12.11.92.42.01.00.8

NOAA 1991–2020 climate normals from the nearest station: CRYSTAL CITY (0.6 mi) · NOAA NCEI

Places in ZIP 78839

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page